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Finding the Fourth Proportional to 455,352.36, 628,369.83 and 251,398.83

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Solution

The fourth proportional to 455,352.36, 628,369.83 and 251,398.83 is: 346,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,352.36 : 628,369.83 = 251,398.83 : x
  2. Step 2: Convert to fraction form
    455,352.36/628,369.83 = 251,398.83/x
  3. Step 3: Cross multiply
    455,352.36x = 628,369.83 × 251,398.83
  4. Step 4: Simplify right side
    455,352.36x = 157,971,440,069.30
  5. Step 5: Solve for x
    x = 157,971,440,069.30/455,352.36
  6. Step 6: Final answer
    x = 346,921.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.